摘要
解放后,随着我国水利建设事业的发展,新建的水库迅速地遍布祖国各地,水库面积日益扩大,水库渔业在淡水渔业中占据着越来越重要的地位。在我国,水库养鱼是解放后出现的新事物,它必然提出了许多需要解决的新问题,如何对待凶猛鱼类就是其中之一。
The authors distinguish the predatory fish in reservoirs of the middle and lower Chang Jiang(Yangtze)Valley into a benthic group and a pelagic group,with the latter group further subdivided into the Erythroculter type and the Elopichthys type.After the filling of the reservoirs,with the lapse of time,predatory fish display a pheno-menon of succession with definite regularities.The mode of succession depends on the hydrological conditions,the composition of the original fish fauna before filling of the reservoir,and the degree of human interference.An integrated pattern of succession is:benthic group→Erythroculter type of the pelagic group→Elopi-chthys type→Erythroculter type again,when Elopichthys is put under control.After analysing the main feature of our reservoir fisheries——artifical stocking and the extent of damage caused by predatory fish,the authors consider that the policy of destroying them as much as possible should be adopted.Approach to the control of predatory fish population in principle is made,and some of the suggested ways and means have already been proved to be effective in practice.
作者
陈敬存
林永泰
伍掉田
Chen Jingcun;Lin Yongtai;Wu Zhoutian(Institute of Hydrobiology,Hubei Province)
出处
《海洋与湖沼》
1978年第1期49-58,共10页
Oceanologia Et Limnologia Sinica
